contestada

A sample of helium-4 behaves as an ideal gas as it isheated at
constant pressure from 294 K to 404 K. If 33 J of work isdone by
the gas during this process, what is the mass of
heliumpresent?

Respuesta :

MechEngineer

Answer:

0.05777 g

Explanation:

Let Helium specific heat be 5.193 J/g K

As heat energy is converted to 33J or work done by this gas, this means the heat energy would heat m g of Helium from 294K to 404K, a difference of 110K

[tex]E_h = mc_h \Delta T = 33[/tex]

[tex]m = \frac{33}{c_h \Delta T} = \frac{33}{5.193 * 110} = 0.05777 g[/tex]

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